Home / 90,241.58-124,248.06-79,478.84

Finding the Fourth Proportional to 90,241.58, 124,248.06 and 79,478.84

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Solution

The fourth proportional to 90,241.58, 124,248.06 and 79,478.84 is: 109,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,241.58 : 124,248.06 = 79,478.84 : x
  2. Step 2: Convert to fraction form
    90,241.58/124,248.06 = 79,478.84/x
  3. Step 3: Cross multiply
    90,241.58x = 124,248.06 × 79,478.84
  4. Step 4: Simplify right side
    90,241.58x = 9,875,091,681.05
  5. Step 5: Solve for x
    x = 9,875,091,681.05/90,241.58
  6. Step 6: Final answer
    x = 109,429.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.